edited by Michael Shayer
Open University Press, 2002
Buku Teks
Burke, Kay
Hawker Brownlow Education, 1999
Buku Teks
Nagel, Michael C.
Oxford University Press, 2016
Buku Teks
Wang, Qing, 1985-
Routledge, 2018
Buku Teks
Stephen N. Elliot [and others]
McGraw-Hill, 2000
Buku Teks